Amanda Spivak, Associate ProfessorResearch Emphasis:My research focuses on the ecology and biogeochemistry of coastal wetlands and estuaries. Elucidating controls on coastal ecosystem functioning is critical because these systems provide human societies with economically valuable services and are important, but poorly constrained, components of the global carbon cycle. Estuaries and wetlands are biologically, chemically, and physically complex environments that are acutely impacted by human activities. Disturbances such as nutrient pollution, over-fishing, and climate change fundamentally alter how estuaries and wetlands function and interact with the coastal ocean. Because efforts to reverse or remediate the effects of disturbances can further perturb fragile wetlands and estuaries, a key unknown is whether impacted habitats can be restored to pre-disturbance conditions. Through my research, I seek to develop an integrated understanding of ecosystem biogeochemistry and ecology in order to refine the role of estuaries and wetlands in the global carbon cycle and predict the likelihood of recovery from human disturbances. I use innovative geochemical tracer approaches in combination with mesocosm and landscape scale experiments to quantify carbon pathways, transformations, and fate in wetland and nearshore habitats and evaluate the effects of human disturbances. By taking an interdisciplinary approach, my research has demonstrated that ecological communities have profound effects on sediment biogeochemistry and, as a result, coastal carbon cycling and ecosystem responses to anthropogenic disturbances. GCE Committees:GCE Predator Exclusion Experiment Committee, GCE Disturbance Committee, GCE Flux Tower Committee, GCE Executive Committee Contact Information:Primary Organization: University of Georgia Mailing Address: Dr. Amanda C. Spivak Office Phone: (706) 542-5709 E-Mail: aspivak@uga.edu Web Page: http://www.marsci.uga.edu/directory/people/amanda-spivak Other Identity Systems:ORCID: orcid.org/0000-0001-6743-0783 GCE Data Sets:ORG-GCED-2404 (Decomposition, porewater, plant and animal collection, and soil temperature data in Airport Marsh, Sapelo Island, 7/2019-7/2020) MSH-GCET-2305 (Characterizing the ecology and soil biogeochemistry of wetland transition zones along the Satilla River Estuary, GA, USA.) ORG-GCEL-2212 (Experimental soil metabolism responses to oxygen availability and carbon pulses) GCE Publications and Presentations: (custom bibliography)Journal Articles |
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This material is based upon work supported by the National Science Foundation under grants OCE-9982133, OCE-0620959, OCE-1237140 and OCE-1832178. Any opinions, findings, conclusions, or recommendations expressed in the material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.